Improvement in grain-separators



2 Sheets-Sheet 2.

A.` ROWE.

Grain Separator.

Patented Dec. 9, 1862.

IwUe1/z07 N. PETERS. Pham-uximgmpher. wasmngmn. n4 C.

ANSON ROWE, OF ATALISSA, IOVA.

lMPPtOi/EM ENT iN GRAIN-SEP-RATOHS.

Specification forming part of Letters Patent No. 37,11! dated December9, ltitifl.

To @ZZ whom t may concern:

Be it known that l, ANSON ROWE, of Atalissa, in the county ofllfluscatine and State of Iowa, have invented a new and ImprovedGraiirSeparator, and l do hereby declare that the following is a full,clear, and exact description of the saine, reference being had totheaccompanying drawings, making' a part of this specification, inwhich- Figure 1 is a side sectional view of my invention, taken in theline m af, Fig. 2. liig 2 is a front view ofthe same; Fig. 3, a verticalsection of the same, taken in the line y y, Fig. l; Fig. 1l, a detachedviewof one of the blades or wings of the fan.

Similar letters ofreference indicate corresponding parts in the severalfigures.

The object of this invention is to obtain a grain-separator ofsimpleconstruction, which will operate more efficiently than those previouslyconstructed and not be liable to get out of repair.

To enable those skilled in the art to fully understand and construct myinvention, l will proceed to describe it.

A represents the framing of the separator, which is inclosed by sides ea, as usual, and having a semi-cylindrical projection, b, at its frontend, which serves as a fan-case, a curved plate, c, being placed withinthe framing to form a continuation of the ease at its upper part, asshown in Fig. l.

Bis a hopper, which is secured upon the upper part of the framing A, andhas a slide, C, at its bottom to regulate the feed of the grain to themachine as occasion may require.

D represents an inclined feed-board, which is placed in the framing Aunderneath the hopper B, andis hung upon the rods d cl-one at eachside-one of which, df, passes through one of the sides t of the framing,and is connected to the upper end of a lever, E, which has its fulcrumat e. This lever is operated by a tappet, j", on a horizontal shaft, F,having its bearings at one side of the framing, and operated or rotatedby bevelgears g, from the fan-shaft G of theinachine. (Shown in Fig. 1.)This lever E when operated gives a lateral vibrating movement to thefeed-board D, the rods d d heilig allowed to slide in their bearings.

H H represent two riddles, which may be constructed in the usual orinany proper way.

These riddles are hung in the framing similar to the feed-board D,having a rod, hv, attached at one side at about their centers. Theserods pass through vertical slots in one sided ofthe framing, and havetheir bearin gs in plates I, which may be adjusted higher or lower bymeans of setscrews 'L'. (SeeFig.2.) Theop-y posite sides of the riddleshave bars j at, tached to them at points coinciding with the rods zf,and these liars pass through the side of the framing, and are attachedone to the upper end of lever J, and the other to the lower end, asshown in Figs. 2 and 3. The fulcrum of the lever J is at lr, and thelever J is operated from the shaft F by a tappet,l. This arrangementgives a reciprocating motion to thel two riddles H H in opposite direc-`tion, and by this movement the concussions and jarring attending thelateral vibrating movement ot' the shoe ordinarily used are avoided, asoneV riddle in operating connteracts the other, so far as Atremor orYjars are concerned, for the riddles work independently of each other,and the weight ofthe grain on them, in consequence of moving with theriddles in opposite directions, cannot exert that powerful tremor andshaking niotion which attends the operation of the ordinary shoe havingthe riddles placed in it, and all moving in concert or bodily together.The barj of the lower riddle H has a spring, m, connected to it, whichkeeps thelower end ofthe lever J in contact with the tappet Z- in otherwords, gives the returirmovement to the riddles in the direction reverseto that given by the tappet. @ver the upper riddle H there is placed ametallic plate, K, which serves as a cover for said screen, and preventsall light foreign matter from passing upon it. The space between thedischarge end of the feed-board D and the inner end of the upper riddleH is sufficiently great to allow the fan L, hereinafter described,toeject said light foreign substances through the said space, and theplate K prevents them from falling on the upper riddle. The latter,therefore, will not bc overta-Xed nor compelled to perform any but itslegitimate work. This is animportant feature of the invention, and addsgreatly to the efciency of the machine. Directly below the lower riddleH there is placed a screen or sieve, lll, having a chute, M', below it.This sieve is inclinedl in a reverse direction to the riddles H, asshown in Fig. 1. The outer end of this seive is provided with pins n-oncat each side-and these pins are iitted in the upper ends of springs N N,at tached to t-he sides of the framing. The inner end ofthe screen Mrests upon a lever, 0, havin g its fulcrum at o. This lever O passesthrough one side of the framing, and it is connected by a joint with thelower end ofa slide, P, which is acted upon at its upper end by aTappet, q, on the shaft F. The inner end of the lever 0 has a spring, r,connected to it, which keeps the slide I in contact With the Tappet q.By this arrangement an up-anddown shake-motion is communicated to thesieve M. The fan L is placed on the shaft G, and is provided with bentblades or wings o". These blades or wings arc bent, so as to f'orm auobtnse'V, as shown clearly in Fig. 4. The concave surfaces of these fansform their face sides or the sides which force the air from theian-case, the air entering at .each side of the case. On the fan-shaftG, at its center, there is placed a circular disk, H', which is in linewith the centers ofthe blades or wings r, and is in contact with them.(See Fig. l.) This circular disk H serves as a partition for the l'an,and causes the air to be forced through the space between the outer edgeof the feed board D and the inner end of the upper riddle H with anuniform strength from one end ot' the space to the other. With theordinary straight-bladed fan the strength ot' the blastis alwaysgreatest at the ends of the fan, gradually diminishing toward thecenter. This result is obviated by my arrangement and construction ofthe blades or win gs, which draw the. air toward the center and cause itto be supplied suthciently, so that it will be expelled from thefan-case with a uniform strength throughout the entire width of thelatter. This end is an important one with this invention, as it insuresall light foreign substances being thrown by the blast on the plate K.The riddles H H may be adjusted at any time, so as to "be in ahorizontal position transversely by regulating the position of theplates I, adjusting them higher or lower. The feed-board D may also headjusted in the same way by having one of its rods d fitted in a platearranged like the plates I. Between the two riddles an inclined chute,HX, is placed.

In order that the machine may be adjusted in ahorizontal position whenstationary on inclined ground, I have a screw, R, inserted in the lowerend of each foot s of theframing. These screws have each a square, t, onthem to admit of a wrench being applied in order to turn the screws, sothat each foot may be lengthened or shortened, as circumstances mayrequire.

I would remark that the riddles H, instead of being operated by thelevers and tappets,

as shown, may be operated by pitmen and cranks, arranged in any properway.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The plate K, placed on or over the upper riddle H, and in relationwith the feed-board D and fan L, as and for the purpose specified.

2. The combination ofthe sieve M, riddles H H, plate K, feed-board D,and fan L, ar

ranged t'orjoiut operation, as and for the purpose herein set forth.

ANSON ROWE. Witnesses:

ROBERT T. THoMrsoN, LEONARD LAMB.

